Identification of material parameters directly from metal forming processes

An identification scheme for the determination of material parameters directly from forming processes is presented. This scheme is based on the coupling of the finite element method (FEM) and an optimisation technique. The FEM is used to evaluate the behaviour of the material during the forming process, whereas the optimisation technique allows for the adjustment of material parameters so that the calculated response matches the measured one. This identification scheme is applied for illustration, first to the determination of aluminium alloy behaviour from a tensile test, then to a 3D cross deep drawing test. (C) 1998 Elsevier Science S.A. All rights reserved.